Kuma River
Also known as: Kumagawa, Kuma-gawa
Deep gorge, Kyusendo (Kyusen-do) limestone cave near take-out, seasonal wild herbs, waterfowl and fish visible in clear stretches
Is there water?
Whether there is a river here on your dates, and what kind of water it is.
Rain-fed; former Arase Dam removed (free-flowing mid-reach); rainy season (Jun) and typhoon season (Aug-Oct) sharply raise flows
Rapid course Apr-Oct; calm boat cruise year-round (Confirm. post-2020 recovery status)
Spring to autumn for rapids; rapid course operates Apr to end Oct; boat cruises broader
Warm Kyushu river; summer water ~20-25C (est); spring/autumn cooler, wetsuit advisable early/late season
Rainy-season and typhoon rainfall can suspend operations; site of catastrophic July 2020 flooding (77 deaths regionally)
Grade & who can come
A river changes grade with its level. These grades describe a normal flow - in flood the same run is harder, and often a different run entirely. Check the gauge before you commit.
Class 2-3 (5 major rapids on Kyuryu course); Seiryu course near flatwater
Rafting; traditional boat descent (kudari)
Rafts ~6-8 pax; traditional boats seat larger groups; calm Seiryu vs rapid Kyuryu split by ability
All-ages on Seiryu boat cruise; rafting for active participants; JR Hitoyoshi Stn ~20 min walk from embarkation
The run
Five named rapid sets on the Kyuryu (Rapid Stream) run; traditional boatmen navigate by pole and oar; rafting adds swim/play sections
High water closes runs; strainers and debris possible post-flood; obey operator go/no-go
Kyuryu (Rapid Stream) Course - Hitoyoshi to near Kyusendo
Popular regional attraction; busiest summer and autumn-foliage season; boat cruises draw sightseers
Access & shuttle
Operator tour fees; traditional boat cruise ticketed (Confirm. current prices and course availability)
Permits and operators change - confirm before booking.
Put-in at Hitoyoshi dock near JR Hitoyoshi Stn; take-out near Kyusendo / Kuma Village berth
Operator-run shuttle for rafting; JR Hisatsu/Kuma line access (line partly disrupted post-2020, Confirm.)
No river camps; Hitoyoshi onsen town lodging
Wetsuit/PFD/helmet supplied by operator; mobile coverage moderate in gorge
Kumagawa Kudari / HASSENBA (kumagawa.co.jp); local rafting outfitters, Hitoyoshi onsen hubs
Hazards & exits
Post-2020 flood recovery ongoing; confirm which courses run before travel; high-water typhoon closures
Road-accessible gorge; operator safety craft; Hitoyoshi town emergency services
Guided only - traditional boatmen or rafting guides required
This profile is desk research, compiled from public sources - not a first-hand river run report. Coordinates are approximate.